If You Were to Measure Your Pulse Rate While in a Spaceship

question 32

Multiple Choice

If you were to measure your pulse rate while in a spaceship moving away from the Sun at a speed close to the speed of light, you would find that it was

• A)much faster than normal.
• B)much slower than normal.
• C)the same as it was here on Earth.

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Definitions:

Oxidative Phosphorylation

A process occurring in mitochondria that uses oxygen and high-energy electrons to produce ATP and water.

Krebs Cycle

A series of chemical reactions used by all aerobic organisms to generate energy through the oxidation of acetate derived from carbohydrates, fats, and proteins into carbon dioxide and water.

Oxygen

A chemical element with symbol O and atomic number 8, essential for respiration in animals and plants and a component of the Earth's atmosphere.

Oxygen Consumption

The rate at which oxygen is used by tissues, an important measure of metabolic activity and energy expenditure in organisms.